... sunscreens and other personal care products are turning up in water supplies. Some are toxic or cause hormonal damage to ... In my laboratory we are studying these emerging waterpollutants, which are turning up in surface water, groundwater and even ... Why is water sacred to Native Americans?. Thegreenj Tiny beads, big problem, easy fix: why scientific evidence supports a ban ... New pollutants, present worldwide. Personal care products and their ingredients are widely distributed throughout our ...

In my laboratory we are studying these emerging waterpollutants, which are turning up in surface water, groundwater and even ... Home / Environment / There's a New Generation of WaterPollutants in Your Medicine Cabinet ... There's a New Generation of WaterPollutants in Your Medicine Cabinet. Ingredients from shampoo, sunscreens and other personal ... Filed Under: Environment, Featured Content Tagged With: environment, Food Waste, the conversation us, water ...

This is a standard water-treatment test for the presence of organic pollutants.This page has the latest values, historical data ... forecasts, charts, statistics, an economic calendar and news for Organic waterpollutant (BOD) emissions (kg per day) in Fiji. ... which refers to the amount of oxygen that bacteria in water will consume in breaking down waste. ... Emissions of organic waterpollutants are measured by biochemical oxygen demand, ...

Chemical-Maker Sued Over Drinking WaterPollutant Fears. Posted by Associated Press , Oct 6, 2017 , State , 0 ... Nix wants the lawsuit to include more than 200,000 people served by a Wilmington water utility as well as others in the region ... Carolina man's federal lawsuit contends chemical-makers for years released little-understood compounds into the drinking water ...

Emissions of organic waterpollutants are measured by biochemical oxygen demand, which refers to the amount of oxygen that ... This is a standard water-treatment test for the presence of organic pollutants. ... Organic waterpollutant (BOD) emissions (kg per day). * Provider: World Bank * Source URL: http://data.worldbank.org/indicator/ ... bacteria in water will consume in breaking down waste. ...

... it is a pollutant and it is regulated by EPA as a water "contaminant." But if it is in our drinking water and we ingest it into ... Fluoride in the water means pollutants within the body. Source: The Tennessean , January 10th, 2006 , By DANIEL G. STOCKIN ... Buried in many water agencies' quality reports amongst a dizzying list of chemical names is a little-observed statement that ... But now information is pouring in from around the world and the U.S. that shows that fluoridated drinking water may actually be ...

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Report: Pollutants in D.C. Area Drinking Water' "A nonprofit organization that monitors the health of the Potomac River said ... The Potomac Conservancy in its third annual State of the Nation's River report highlighted a number of pollutants in the ...

... which can adsorb pollutant from water followed by degradation of the pollutant by light irradiation. The MOF comprising ... Therefore, the porphyrin based new MOF can serve as a new material for pollutant removal in water. Details of our recent work ... Water is one of the most important components for our life. Preservation of fresh water is one of the most important issues in ... The MOF selectively adsorb a pollutant having smaller size than its pore size, which demonstrates size selective pollutant ...

Is your drinking water clean? Is it safe to drink? The animation illustrates what emerging pollutants are, how they enter water ... The Catalan Water Partnership aims to enhance the strategical reflexion with all stakeholders in the water sector in Catalunya ... DEMEAU Animation: Dare to Drink? Emerging Pollutants in Our Water ... The main disadvantage of the use of ozone in drinking water treatment is the formation of bromate in bromide-containing water. ...

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... of Bristol University of Exeter Water Active Water Colloquium Water Security Water Security Alliance WEIR Wessex Water WIRC @ ... Linking chemical-soil interactions to pollutant fate and transport from soil to water. Posted by Sarah Eliot on May 4, 2017. ... Water supply from source to tap. This May sees the next talk in the monthly 'Water Colloquium' series organised by WIRC @ Bath ... Title: Linking chemical-soil interactions to pollutant fate and transport from soil to water ...

For example, in the textile industries, the discharged dyeing effluents also contain numerous kinds of other pollutants besides ... Contaminants in real water are typically very complicated, and various types of contaminants usually coexist. ... The coexisting pollutants obviously cause further deterioration of water pollution and significantly increase the difficulty of ... Efficient co-adsorption of multiple types of coexisting pollutants from water using a chitosan-based magnetic composite ...

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New technique lets scientists view step-by-step breakdown of waterpollutant. Rice University scientists on the hunt for a ... Effective oil-water separation without nanofiltration. Materials engineers have created a new type of membrane that separates ... oil from water and, if perfected, might be used for environmental cleanup, water purification and industrial applications. ... In growing algae for biofuels, it matters who used the water last ... better way to clean up the stubborn pollutant TCE have created ...

(1/492) The epizootiology and pathogenesis of thyroid hyperplasia in coho salmon (Oncorhynchus kisutch) in Lake Ontario.

The thyroid glands of coho salmon collected at different stages of their anadromous migration exhibited progressive and extensive hyperplasia and hypertrophy. The incidence of overt nodule formation rose from 5% in fish collected in August to 24% in fish collected in October. The histological picture of the goiters was similar to that found in thiourea-treated teleosts and thiouracil-treated mammals. There was a concomitant, significant decrease in serum thyroxine and triiodothyronine values between September and October (thyroxine, 1.0+/-0.3 mug/100 ml and 0.4 mug/100 ml in September and October, respectively; triiodothyronine, 400.3+/-51.6 ng/100 ml and 80.2 ng/100 ml in September and October, respectively) and marked hypertrophy and hyperplasia of thyrotrophs. These data indicate a progressive hypothyroid condition which, although it may be linked to iodide deficiency, may well be enhanced by other environmental factors. The evidence for involvement of other factors is discussed. (+info)

(2/492) A comparison of the reproductive physiology of largemouth bass, Micropterus salmoides, collected from the Escambia and Blackwater Rivers in Florida.

Largemouth bass (LMB), Micropterus salmoides, were taken from the Escambia River (contaminated site) and the Blackwater River (reference site) near Pensacola, Florida. The Escambia River collection occurred downstream of the effluent from two identified point sources of pollution. These point sources included a coal-fired electric power plant and a chemical company. Conversely, the Blackwater River's headwaters and most of its length flow within a state park. Although there is some development on the lower part of the Blackwater River, fish were collected in the more pristine upper regions. Fish were captured by electroshocking and were maintained in aerated coolers. Physical measurements were obtained, blood was taken, and liver and gonads were removed. LMB plasma was assayed for the concentration of 17ss-estradiol (E2) and testosterone using validated radioimmunoassays. The presence of vitellogenin was determined by gel electrophoresis (SDS-PAGE) and Western blotting using a monoclonal antibody validated for largemouth bass vitellogenin. No differences in plasma concentrations of E2 or testosterone were observed in females from the two sites. Similarly, males exhibited no difference in plasma E2. However, plasma testosterone was lower in the males from the contaminated site, as compared to the reference site. Vitellogenic males occurred only at the contaminated site. Additionally, liver mass was proportionately higher in males from the contaminated site, as compared to males from the reference site. These data suggest that reproductive steroid levels may have been altered by increased hepatic enzyme activity, and the presence of vitellogenic males indicates that an exogenous source of estrogen was present in the Escambia River. (+info)

(3/492) The role of humic substances in drinking water in Kashin-Beck disease in China.

We conducted in vitro and in vivo assays in a selenium-deficient system to determine if organic matter (mainly fulvic acid; FA) is involved in a free radical mechanism of action for Kashin-Beck disease. Cartilage cell culture experiments indicated that the oxy or hydroxy functional groups in FA may interfere with the cell membrane and result in enhancement of lipid peroxidation. Experiments with rats demonstrated that toxicity from FA was reduced when the hydroxy group was blocked. Induction of lipid peroxidation by FA in liver and blood of rats was similar to that exhibited by acetyl phenyl hydrazine. FA accumulated in bone and cartilage, where selenium rarely concentrates. In addition, selenium supplementation in rats' drinking water inhibited the generation of oxy-free radicals in bone. We hypothesized that FA in drinking water is an etiological factor of Kashin-Beck disease and that the mechanism of action involves the oxy and hydroxy groups in FA for the generation of free radicals. Selenium was confirmed to be a preventive factor for Kashin-Beck disease. (+info)

Microbial community composition associated with benzene oxidation under in situ Fe(III)-reducing conditions in a petroleum-contaminated aquifer located in Bemidji, Minn., was investigated. Community structure associated with benzene degradation was compared to sediment communities that did not anaerobically oxidize benzene which were obtained from two adjacent Fe(III)-reducing sites and from methanogenic and uncontaminated zones. Denaturing gradient gel electrophoresis of 16S rDNA sequences amplified with bacterial or Geobacteraceae-specific primers indicated significant differences in the composition of the microbial communities at the different sites. Most notable was a selective enrichment of microorganisms in the Geobacter cluster seen in the benzene-degrading sediments. This finding was in accordance with phospholipid fatty acid analysis and most-probable-number-PCR enumeration, which indicated that members of the family Geobacteraceae were more numerous in these sediments. A benzene-oxidizing Fe(III)-reducing enrichment culture was established from benzene-degrading sediments and contained an organism closely related to the uncultivated Geobacter spp. This genus contains the only known organisms that can oxidize aromatic compounds with the reduction of Fe(III). Sequences closely related to the Fe(III) reducer Geothrix fermentans and the aerobe Variovorax paradoxus were also amplified from the benzene-degrading enrichment and were present in the benzene-degrading sediments. However, neither G. fermentans nor V. paradoxus is known to oxidize aromatic compounds with the reduction of Fe(III), and there was no apparent enrichment of these organisms in the benzene-degrading sediments. These results suggest that Geobacter spp. play an important role in the anaerobic oxidation of benzene in the Bemidji aquifer and that molecular community analysis may be a powerful tool for predicting a site's capacity for anaerobic benzene degradation. (+info)

(5/492) Associations between stomach cancer incidence and drinking water contamination with atrazine and nitrate in Ontario (Canada) agroecosystems, 1987-1991.

BACKGROUND: Nitrate and atrazine are two chemicals that are heavily used in certain sectors of agriculture. They are suspected to be associated with the development of certain types of tumours. METHODS: Existing data were obtained on the incidence of specific types of cancers, contamination of drinking water with atrazine and nitrate, and related agricultural practices for the 40 ecodistricts in the province of Ontario. The data were merged into a georelational database for geographical and statistical analyses. Weighted (by population size) least squares regression analyses were conducted while controlling for confounding socioeconomic and lifestyle factors. Maximum likelihood spatial error models were estimated when least square regression error terms were found to be spatially autocorrelated using the Moran's I statistic. RESULTS: Atrazine contamination levels (range 50-649 ng/l, maximum acceptable concentration [MAC] = 60000 ng/l) were positively associated (P < 0.05) with stomach cancer incidence and negatively associated with colon cancer incidence. Nitrate levels, (range 0-91 mg/l, MAC = 10 mg/l) were negatively associated with stomach cancer incidence. CONCLUSION: The associations found at the ecodistrict level, both positive and negative, if confirmed by other studies, raise serious questions about maximum allowable limits for atrazine, as well as possibilities of complex trade-offs among disease outcomes, and interactions of biophysical and social mechanisms which might explain them. Although the negative associations appear to have no direct biological explanations, such counter-intuitive outcomes may occur in complex systems where social and biological variables interact. (+info)

Nonylphenol has been found to exert estrogenic effects in fish and may influence the fertility of male fish. In the present study, the effects of nonylphenol and 17beta-estradiol on vitellogenin synthesis and testis morphology in platyfish Xiphophorus maculatus were investigated. Vitellogenin was observed in the plasma of all fish exposed to nonylphenol or 17beta-estradiol. Exposure to 17beta-estradiol resulted in a significant reduction in the gonadosomatic index. A tendency for a dose-dependent reduction in the gonadosomatic index in the nonylphenol exposed groups was observed. Histological examination revealed dose-dependent effects of nonylphenol on the testis structure. The testes of control fish contained numerous cysts with spermatogenetic cells. The testes of fish exposed to nonylphenol or 17beta-estradiol showed a decrease in the number of cysts concomitant with an increase in the amount of hypertrophied Sertoli cells present. Formation of spermatozeugmata is compulsory for this species, but free spermatozoa were observed in the efferent ducts of the treated fish. The study indicates that nonylphenol has estrogenic potency, and that both nonylphenol and 17beta-estradiol have marked effects on the testis morphology of X. maculatus. The ambient concentration of nonylphenol was measured by high pressure liquid chromatography during the experiment. The measurements revealed that the actual concentrations of nonylphenol in the water were about 30-40 % of the nominal concentrations. (+info)

(7/492) Drinking water turbidity and gastrointestinal illness in the elderly of Philadelphia.

STUDY OBJECTIVE: To investigate the association between drinking water quality and gastrointestinal illness in the elderly of Philadelphia. DESIGN: Within the general population, children and the elderly are at highest risk for gastrointestinal disease. This study investigates the potential association between daily fluctuations in drinking water turbidity and subsequent hospital admissions for gastrointestinal illness of elderly persons, controlling for time trends, seasonal patterns, and temperature using Poisson regression analysis. SETTING AND PARTICIPANTS: All residents of Philadelphia aged 65 and older in 1992-1993 were studied through their MEDICARE records. MAIN RESULTS: For Philadelphia's population aged 65 and older, we found water quality 9 to 11 days before the visit was associated with hospital admissions for gastrointestinal illness, with an interquartile range increase in turbidity being associated with a 9% increase (95% CI 5.3%, 12.7%). In the Belmont service area, there was also an association evident at a lag of 4 to 6 days (9.1% increase, 95% CI 5.2, 13.3). Both associations were stronger in those over 75 than in the population aged 65-74. This association occurred in a filtered water supply in compliance with US standards. CONCLUSIONS: Elderly residents of Philadelphia remain at risk of waterborne gastrointestinal illness under current water treatment practices. Hospitalisations represent a very small percentage of total morbidity. (+info)

BACKGROUND: Workers on dredgers and lighters on rivers are exposed to the inhalation of aerosols and dusts. OBJECTIVE: The aim of this study was to investigate effects of river silt aerosol and dust exposure on the respiratory health of dredging employees. METHODS: Six examinations were performed over a period of 2 years at 4-monthly intervals in 54 seamen with higher silt aerosol exposure and 36 controls of the same employer. RESULTS: No significant differences could be observed between the groups at any time of the study but there was an unexpected significant decrease in the age-corrected expiratory vital capacity (FVC), forced expiratory volume in 1 s (FEV(1)) and midexpiratory flow rate (MMEF(25/75)) over the six series in both groups. This may indicate a loss of effort of the participants in re-examinations since biological and technical influences were highly unlikely to be the cause of these findings. CONCLUSIONS: Ignoring this possible decline of effort in frequently repeated measurements may result in overestimating potential effects of occupational exposure. (+info)

Such standards are generally expressed as levels of a specific water pollutants (whether chemical, physical, biological, or radiological) that are deemed acceptable in the water volume, and are generally designed relative to the water's intended use - whether for human consumption, industrial or domestic use, recreation, or as aquatic habitat. (wikipedia.org)

However, pharmaceuticals are not the largest contributor to the growing amount of gender-altering pollution in the water. (wikipedia.org)

The composition and total biomass of algal species in aquatic systems serve as an important metric for organic water pollution and nutrient loading such as nitrogen and phosphorus. (wikipedia.org)

The most prominent linear sources are roadway air pollution, aircraft air emissions, roadway noise, certain types of water pollution sources that emanate over a range of river extent rather than from a discrete point, elongated light tubes, certain dose models in medical physics and electromagnetic antennas. (wikipedia.org)

This definition begins to define both the classes or types of materials (e.g., solid waste) and energies (e.g., heat) that may constitute water pollution, and indicates the moment at which otherwise useful materials may be transformed into pollution for regulatory purposes: when they are "discharged into water," defined elsewhere as "addition" of the material to regulated waters. (wikipedia.org)

For example, the CWA definition quoted above later excludes sewage discharged from certain classes of vessels, meaning that a common and important class of water pollution is, by definition, not considered a pollutant for purposes of the United States' primary water quality law. (wikipedia.org)

Although thermal pollution is subject to regulation under the CWA, definitional questions have resulted in litigation, including whether even water itself may qualify as a "pollutant" (e.g., adding warm water to a stream). (wikipedia.org)

A North Carolina man's federal lawsuit contends chemical-makers for years released little-understood compounds into the drinking water for hundreds of thousands, hurting property values while the companies profited. (chapelboro.com)

Buried in many water agencies' quality reports amongst a dizzying list of chemical names is a little-observed statement that the source of the "contaminant" fluoride is "discharge from fertilizer and aluminum factories. (fluoridealert.org)

UV-based and chemical oxidation processes are preferred treatment technologies for the elimination of emerging pollutants in drinking water and wastewater because of their flexibility, long-term stability, low costs, and controllability (cp. (demeau-fp7.eu)

Bioindicators can tell us about the cumulative effects of different pollutants in the ecosystem and about how long a problem may have been present, which physical and chemical testing cannot. (wikipedia.org)

They identify the pollutant, and at last find the spot where it appears in the river-but there is no chemical facility in the vicinity, and in fact no sign of anything entering the river. (wikipedia.org)

They drive the Voisin north, into the desert, toward the chemical waste processing facility Fort Foureau, the only facility that could possibly leak the pollutant into the river. (wikipedia.org)

Many others, including restrictions on the alteration of the chemical, physical, radiological, and biological characteristics of water resources, may also reflect efforts to protect aquatic ecosystems more broadly. (wikipedia.org)

Research done in the Philippines suggested the effectiveness of S. molesta for the treatment of blackwater effluent for an eco-friendly sewage system that uses a constructed wetland to clean the water. (wikipedia.org)

A bioindicator is an organism or biological response that reveals the presence of the pollutants by the occurrence of typical symptoms or measurable responses and is, therefore, more qualitative. (wikipedia.org)

In 1996 for Willamette River Park in Portland, Oregon a total of 2330 lineal feet of bioswale was designed and installed to capture and prevent pollutant runoff from entering the Willamette River. (wikipedia.org)

Oxidation of drinking and wastewater for disinfection purposes has a long tradition, but its benefits for emerging pollutant removal during wastewater treatment have only been recently tested (e.g. (demeau-fp7.eu)

Therefore, the transfer of knowledge from the drinking water to the wastewater field and demonstration of the technology would be highly beneficial for technology uptake. (demeau-fp7.eu)

For example, copepods and other small water crustaceans that are present in many water bodies can be monitored for changes (biochemical, physiological, or behavioural) that may indicate a problem within their ecosystem. (wikipedia.org)

The Potomac Conservancy in its third annual State of the Nation's River report highlighted a number of pollutants in the Potomac River that disrupt the endocrine system in humans and in fish and contribute to a condition in which some fish exhibit both male and female traits. (sej.org)

A line source, as opposed to a point source, area source, or volume source, is a source of air, noise, water contamination or electromagnetic radiation that emanates from a linear (one-dimensional) geometry. (wikipedia.org)

Arsenic is present naturally however the assessments done show in the 2014 study shows the contamination of Arsenic with a level of 11.8 ppb in the drinking water. (wikipedia.org)

These organisms (or communities of organisms) deliver information on alterations in the environment or the quantity of environmental pollutants by changing in one of the following ways: physiologically, chemically or behaviourally. (wikipedia.org)

Since the 1970s, despite frequent legislative gridlock, there have been significant achievements in environmental regulation, including increases in air and water quality and, to a lesser degree, control of hazardous waste. (wikipedia.org)

The Water Framework Directive (Directive 2000/60/EC of the European Parliament and of the Council of 23 October 2000 establishing a framework for Community action in the field of water policy) is a European Union directive which commits European Union member states to achieve good qualitative and quantitative status of all water bodies (including marine waters up to one nautical mile from shore) by 2015. (wikipedia.org)

The Mahakam lakes and surrounding wetlands act as water storage as well as a trap of sediment contained in the water flowing into the lakes which are now known to become shallower, presumably as a result of an imbalance between sediment input and slow subsidence. (wikipedia.org)

The water's flow path, along with the wide and shallow ditch, is designed to maximize the time water spends in the swale, which aids the trapping of pollutants and silt. (wikipedia.org)

He came to the conclusion that sound does travel faster in water, but because of the water's density compared to our earth's atmosphere it was incredibly hard to get the sonic waves into the water. (wikipedia.org)

The high level of consumption in the United States encourages the wise management of natural resources while at the same time poses difficult problems involving the protection of the air, water, and land. (countriesquest.com)

A number of European utilities in Switzerland, Germany and the Netherlands have considered implementing oxidation-based technologies to enhance the treatment capacity to remove emerging pollutants from resources and effluents. (demeau-fp7.eu)

Other laws may apply only to a subset of waters within a political boundary (e.g., a national law that applies only to navigable surface waters), or to a special class of water (e.g., drinking water resources). (wikipedia.org)

Together, these studies suggest that the active ingredients in personal care products can be found in any water body influenced by human activity. (theconversation.com)

Ingredients from shampoo, sunscreens and other personal care products are turning up in water supplies. (goodmenproject.com)

A major drawback of oxidation processes is the inherent formation of oxidation byproducts from matrix components (e.g. aldehydes, ketones, carboxylic acids, for ozone, bromate and possibly NDMA) and the fact that emerging pollutants are not fully mineralized, resulting in transformation products (TPs). (demeau-fp7.eu)

But another road block they ran into was the ratio of the amount of time it took for the lower frequency waves to penetrate the bubbles walls and access the water around the bubble, and then time from that point to the point on the other end of the body of water. (wikipedia.org)

To conclude this half of the seminar, I will outline ongoing research with: a European agrochemical company and a UK water company, with whom, we are developing innovations to mitigate pesticide release into the environment and to evaluate pesticide attenuation-competence across water catchments. (bath.ac.uk)

The movement of water spreads S. molesta and the sale and exchange of S. molesta materials increases chances of release to the environment. (wikipedia.org)

The Catalan Water Partnership aims to enhance the strategical reflexion with all stakeholders in the water sector in Catalunya and wants to foster the further internationalisation and innovation. (demeau-fp7.eu)

Triclosans exhibit behaviors that are representative of estrogen and androgen, working in a complex nature to interact with both hormonal receptors Aside from these microscopic EDCs, some of the other more common types of pharmaceuticals found in water analyses are "anti-depressants, anti-seizure drugs, and one that is very well known: birth control. (wikipedia.org)